SQL> Begin
  2  for i IN 1..10 loop
  3  dbms_output.put_line('- iteration '||i||' value '||i*2);--increment by 2
  4  dbms_output.put_line('-       iteration '||i||' value '||i*3);--increment by 3
  5  dbms_output.put_line('-                iteration '||i||' value '||i*10);--increment by 10
  6  dbms_output.put_line('__________________________________');
  7  end loop;
  8  end;
  9  /
- iteration 1 value 2
-       iteration 1 value 3
-                iteration 1 value 10
__________________________________
- iteration 2 value 4
-       iteration 2 value 6
-                iteration 2 value 20
__________________________________
- iteration 3 value 6
-       iteration 3 value 9
-                iteration 3 value 30
__________________________________
- iteration 4 value 8
-       iteration 4 value 12
-                iteration 4 value 40
__________________________________
- iteration 5 value 10
-       iteration 5 value 15
-                iteration 5 value 50
__________________________________
- iteration 6 value 12
-       iteration 6 value 18
-                iteration 6 value 60
__________________________________
- iteration 7 value 14
-       iteration 7 value 21
-                iteration 7 value 70
__________________________________
- iteration 8 value 16
-       iteration 8 value 24
-                iteration 8 value 80
__________________________________
- iteration 9 value 18
-       iteration 9 value 27
-                iteration 9 value 90
__________________________________
- iteration 10 value 20
-       iteration 10 value 30
-                iteration 10 value 100
__________________________________

PL/SQL procedure successfully completed.